The brothers are facing charges of plotting attacks on South African soil.

Tony-Lee and Brandon-Lee Thulsie were arrested in 2016 following raids in various parts of Gauteng.

READ MORE: Twin brothers appear in Jhb court on terrorism charges

They were accused of having links to the Islamic State group. The state alleged they were plotting to detonate explosives at the US embassy and Jewish institutions in the country.

The brothers have been denied bail twice and have been incarcerated for over five years awaiting trial.

Meanwhile, the state says it’s ready to proceed within the next two weeks.

“Unlawful incarceration”

Civil organisations say their incarceration is unlawful and unacceptable. The Media Review Network is calling for the brothers to be released if their trial date is not finalised.

Since their arrest five years ago, the pair has not set foot outside prison.

“We are deeply concerned about the fate of the two brothers, the Thulsie twins, who have been unfairly dubbed as terror twins. They have effectively been detained for the past 5 years without trial. This raises many questions. One about the irregularity or lawfulness of arrest in 2016. Now the state has been floundering in providing any sustainable or credible evidence,” Media Review Network’s Iqbal Jassat explains.

“[I] think it’s highly shocking and unfair for us in a democracy to have such a case on our hands that these boys are being incarcerated and the keys have effectively been thrown away,” says Jassat.

SABC News